Kinetics of Moisture Cure of Silicone Sealants
- 1 March 1998
- journal article
- research article
- Published by Taylor & Francis in The Journal of Adhesion
- Vol. 66 (1-4) , 289-301
- https://doi.org/10.1080/00218469808009970
Abstract
The depth of moisture cure (z) has been measured for lap joints in aluminium with a conventional sealant based on polydimethylsiloxane and one based on polytrifluoro-propylmethylsiloxane. The cured sealant acts as a barrier to the permeation of water; any water which passes through this barrier causes further cure which thickens the barrier. The depth of cure is given by z = (2PVpt )1/2, where P is the permeability coefficient of water in cured sealant, V is the volume of sealant which reacts with 1 mole of water, p is the vapour pressure of water and t is time.Keywords
This publication has 1 reference indexed in Scilit:
- Effect of bonding defects on shear strength in tension of lap joints having brittle adhesivesJournal of Applied Polymer Science, 1972